barrelene

== English == === Etymology === From barrel +‎ -ene, from the resemblance to a barrel, with the staves being three ethylene units attached to two methine groups. === Noun === barrelene (countable and uncountable, plural barrelenes) (organic chemistry) The bicyclic organic compound bicyclo[2.2.2]octa-2,5,7-triene ==== Derived terms ==== benzobarrelene dibenzobarrelene tetrafluorobenzobarrelene